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Merge #5111 from

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branch 'core2' of git://github.com/jtimon/bitcoin into merge-5111
pull/262/head
Jeff Garzik 10 years ago
parent a5eb61d9ef 87fb31086d
commit aa5c0d34b7
Failed to extract signature
7 changed files with 104 additions and 110 deletions
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22
src/coins.cpp
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@ -31,29 +31,15 @@ void CCoins::CalcMaskSize(unsigned int &nBytes, unsigned int &nNonzeroBytes) con
nBytes += nLastUsedByte;
}
bool CCoins::Spend(const COutPoint &out, CTxInUndo &undo) {
if (out.n >= vout.size())
return false;
if (vout[out.n].IsNull())
bool CCoins::Spend(uint32_t nPos)
{
if (nPos >= vout.size() || vout[nPos].IsNull())
return false;
undo = CTxInUndo(vout[out.n]);
vout[out.n].SetNull();
vout[nPos].SetNull();
Cleanup();
if (vout.size() == 0) {
undo.nHeight = nHeight;
undo.fCoinBase = fCoinBase;
undo.nVersion = this->nVersion;
}
return true;
}
bool CCoins::Spend(int nPos) {
CTxInUndo undo;
COutPoint out(0, nPos);
return Spend(out, undo);
}
bool CCoinsView::GetCoins(const uint256 &txid, CCoins &coins) const { return false; }
bool CCoinsView::HaveCoins(const uint256 &txid) const { return false; }
uint256 CCoinsView::GetBestBlock() const { return uint256(0); }

6
src/coins.h
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@ -9,7 +9,6 @@
#include "compressor.h"
#include "serialize.h"
#include "uint256.h"
#include "undo.h"
#include <assert.h>
#include <stdint.h>
@ -237,11 +236,8 @@ public:
Cleanup();
}
//! mark an outpoint spent, and construct undo information
bool Spend(const COutPoint &out, CTxInUndo &undo);
//! mark a vout spent
bool Spend(int nPos);
bool Spend(uint32_t nPos);
//! check whether a particular output is still available
bool IsAvailable(unsigned int nPos) const {

141
src/main.cpp
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@ -17,6 +17,7 @@
#include "txdb.h"
#include "txmempool.h"
#include "ui_interface.h"
#include "undo.h"
#include "util.h"
#include "utilmoneystr.h"
@ -1383,9 +1384,20 @@ void UpdateCoins(const CTransaction& tx, CValidationState &state, CCoinsViewCach
if (!tx.IsCoinBase()) {
txundo.vprevout.reserve(tx.vin.size());
BOOST_FOREACH(const CTxIn &txin, tx.vin) {
txundo.vprevout.push_back(CTxInUndo());
bool ret = inputs.ModifyCoins(txin.prevout.hash)->Spend(txin.prevout, txundo.vprevout.back());
assert(ret);
CCoinsModifier coins = inputs.ModifyCoins(txin.prevout.hash);
unsigned nPos = txin.prevout.n;
if (nPos >= coins->vout.size() || coins->vout[nPos].IsNull())
assert(false);
// mark an outpoint spent, and construct undo information
txundo.vprevout.push_back(CTxInUndo(coins->vout[nPos]));
coins->Spend(nPos);
if (coins->vout.size() == 0) {
CTxInUndo& undo = txundo.vprevout.back();
undo.nHeight = coins->nHeight;
undo.fCoinBase = coins->fCoinBase;
undo.nVersion = coins->nVersion;
}
}
}
@ -1393,6 +1405,12 @@ void UpdateCoins(const CTransaction& tx, CValidationState &state, CCoinsViewCach
inputs.ModifyCoins(tx.GetHash())->FromTx(tx, nHeight);
}
void UpdateCoins(const CTransaction& tx, CValidationState &state, CCoinsViewCache &inputs, int nHeight)
{
CTxUndo txundo;
UpdateCoins(tx, state, inputs, txundo, nHeight);
}
bool CScriptCheck::operator()() {
const CScript &scriptSig = ptxTo->vin[nIn].scriptSig;
if (!VerifyScript(scriptSig, scriptPubKey, nFlags, CachingSignatureChecker(*ptxTo, nIn, cacheStore), &error)) {
@ -1503,7 +1521,63 @@ bool CheckInputs(const CTransaction& tx, CValidationState &state, const CCoinsVi
return true;
}
namespace {
bool UndoWriteToDisk(const CBlockUndo& blockundo, CDiskBlockPos& pos, const uint256& hashBlock)
{
// Open history file to append
CAutoFile fileout(OpenUndoFile(pos), SER_DISK, CLIENT_VERSION);
if (fileout.IsNull())
return error("%s : OpenUndoFile failed", __func__);
// Write index header
unsigned int nSize = fileout.GetSerializeSize(blockundo);
fileout << FLATDATA(Params().MessageStart()) << nSize;
// Write undo data
long fileOutPos = ftell(fileout.Get());
if (fileOutPos < 0)
return error("%s : ftell failed", __func__);
pos.nPos = (unsigned int)fileOutPos;
fileout << blockundo;
// calculate & write checksum
CHashWriter hasher(SER_GETHASH, PROTOCOL_VERSION);
hasher << hashBlock;
hasher << blockundo;
fileout << hasher.GetHash();
return true;
}
bool UndoReadFromDisk(CBlockUndo& blockundo, const CDiskBlockPos& pos, const uint256& hashBlock)
{
// Open history file to read
CAutoFile filein(OpenUndoFile(pos, true), SER_DISK, CLIENT_VERSION);
if (filein.IsNull())
return error("%s : OpenBlockFile failed", __func__);
// Read block
uint256 hashChecksum;
try {
filein >> blockundo;
filein >> hashChecksum;
}
catch (const std::exception& e) {
return error("%s : Deserialize or I/O error - %s", __func__, e.what());
}
// Verify checksum
CHashWriter hasher(SER_GETHASH, PROTOCOL_VERSION);
hasher << hashBlock;
hasher << blockundo;
if (hashChecksum != hasher.GetHash())
return error("%s : Checksum mismatch", __func__);
return true;
}
} // anon namespace
bool DisconnectBlock(CBlock& block, CValidationState& state, CBlockIndex* pindex, CCoinsViewCache& view, bool* pfClean)
{
@ -1518,7 +1592,7 @@ bool DisconnectBlock(CBlock& block, CValidationState& state, CBlockIndex* pindex
CDiskBlockPos pos = pindex->GetUndoPos();
if (pos.IsNull())
return error("DisconnectBlock() : no undo data available");
if (!blockUndo.ReadFromDisk(pos, pindex->pprev->GetBlockHash()))
if (!UndoReadFromDisk(blockUndo, pos, pindex->pprev->GetBlockHash()))
return error("DisconnectBlock() : failure reading undo data");
if (blockUndo.vtxundo.size() + 1 != block.vtx.size())
@ -1760,7 +1834,7 @@ bool ConnectBlock(const CBlock& block, CValidationState& state, CBlockIndex* pin
CDiskBlockPos pos;
if (!FindUndoPos(state, pindex->nFile, pos, ::GetSerializeSize(blockundo, SER_DISK, CLIENT_VERSION) + 40))
return error("ConnectBlock() : FindUndoPos failed");
if (!blockundo.WriteToDisk(pos, pindex->pprev->GetBlockHash()))
if (!UndoWriteToDisk(blockundo, pos, pindex->pprev->GetBlockHash()))
return state.Abort("Failed to write undo data");
// update nUndoPos in block index
@ -2926,7 +3000,7 @@ bool CVerifyDB::VerifyDB(CCoinsView *coinsview, int nCheckLevel, int nCheckDepth
CBlockUndo undo;
CDiskBlockPos pos = pindex->GetUndoPos();
if (!pos.IsNull()) {
if (!undo.ReadFromDisk(pos, pindex->pprev->GetBlockHash()))
if (!UndoReadFromDisk(undo, pos, pindex->pprev->GetBlockHash()))
return error("VerifyDB() : *** found bad undo data at %d, hash=%s\n", pindex->nHeight, pindex->GetBlockHash().ToString());
}
}
@ -4491,61 +4565,6 @@ bool SendMessages(CNode* pto, bool fSendTrickle)
return true;
}
bool CBlockUndo::WriteToDisk(CDiskBlockPos &pos, const uint256 &hashBlock)
{
// Open history file to append
CAutoFile fileout(OpenUndoFile(pos), SER_DISK, CLIENT_VERSION);
if (fileout.IsNull())
return error("CBlockUndo::WriteToDisk : OpenUndoFile failed");
// Write index header
unsigned int nSize = fileout.GetSerializeSize(*this);
fileout << FLATDATA(Params().MessageStart()) << nSize;
// Write undo data
long fileOutPos = ftell(fileout.Get());
if (fileOutPos < 0)
return error("CBlockUndo::WriteToDisk : ftell failed");
pos.nPos = (unsigned int)fileOutPos;
fileout << *this;
// calculate & write checksum
CHashWriter hasher(SER_GETHASH, PROTOCOL_VERSION);
hasher << hashBlock;
hasher << *this;
fileout << hasher.GetHash();
return true;
}
bool CBlockUndo::ReadFromDisk(const CDiskBlockPos &pos, const uint256 &hashBlock)
{
// Open history file to read
CAutoFile filein(OpenUndoFile(pos, true), SER_DISK, CLIENT_VERSION);
if (filein.IsNull())
return error("CBlockUndo::ReadFromDisk : OpenBlockFile failed");
// Read block
uint256 hashChecksum;
try {
filein >> *this;
filein >> hashChecksum;
}
catch (const std::exception& e) {
return error("%s : Deserialize or I/O error - %s", __func__, e.what());
}
// Verify checksum
CHashWriter hasher(SER_GETHASH, PROTOCOL_VERSION);
hasher << hashBlock;
hasher << *this;
if (hashChecksum != hasher.GetHash())
return error("CBlockUndo::ReadFromDisk : Checksum mismatch");
return true;
}
std::string CBlockFileInfo::ToString() const {
return strprintf("CBlockFileInfo(blocks=%u, size=%u, heights=%u...%u, time=%s...%s)", nBlocks, nSize, nHeightFirst, nHeightLast, DateTimeStrFormat("%Y-%m-%d", nTimeFirst), DateTimeStrFormat("%Y-%m-%d", nTimeLast));
}

21
src/main.h
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@ -25,7 +25,6 @@
#include "tinyformat.h"
#include "txmempool.h"
#include "uint256.h"
#include "undo.h"
#include <algorithm>
#include <exception>
@ -290,7 +289,7 @@ bool CheckInputs(const CTransaction& tx, CValidationState &state, const CCoinsVi
unsigned int flags, bool cacheStore, std::vector<CScriptCheck> *pvChecks = NULL);
/** Apply the effects of this transaction on the UTXO set represented by view */
void UpdateCoins(const CTransaction& tx, CValidationState &state, CCoinsViewCache &inputs, CTxUndo &txundo, int nHeight);
void UpdateCoins(const CTransaction& tx, CValidationState &state, CCoinsViewCache &inputs, int nHeight);
/** Context-independent validity checks */
bool CheckTransaction(const CTransaction& tx, CValidationState& state);
@ -302,24 +301,6 @@ bool IsStandardTx(const CTransaction& tx, std::string& reason);
bool IsFinalTx(const CTransaction &tx, int nBlockHeight = 0, int64_t nBlockTime = 0);
/** Undo information for a CBlock */
class CBlockUndo
{
public:
std::vector<CTxUndo> vtxundo; // for all but the coinbase
ADD_SERIALIZE_METHODS;
template <typename Stream, typename Operation>
inline void SerializationOp(Stream& s, Operation ser_action, int nType, int nVersion) {
READWRITE(vtxundo);
}
bool WriteToDisk(CDiskBlockPos &pos, const uint256 &hashBlock);
bool ReadFromDisk(const CDiskBlockPos &pos, const uint256 &hashBlock);
};
/**
* Closure representing one script verification
* Note that this stores references to the spending transaction

3
src/miner.cpp
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@ -279,8 +279,7 @@ CBlockTemplate* CreateNewBlock(const CScript& scriptPubKeyIn)
if (!CheckInputs(tx, state, view, true, MANDATORY_SCRIPT_VERIFY_FLAGS, true))
continue;
CTxUndo txundo;
UpdateCoins(tx, state, view, txundo, nHeight);
UpdateCoins(tx, state, view, nHeight);
// Added
pblock->vtx.push_back(tx);

7
src/txmempool.cpp
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@ -585,9 +585,9 @@ void CTxMemPool::check(const CCoinsViewCache *pcoins) const
if (fDependsWait)
waitingOnDependants.push_back(&it->second);
else {
CValidationState state; CTxUndo undo;
CValidationState state;
assert(CheckInputs(tx, state, mempoolDuplicate, false, 0, false, NULL));
UpdateCoins(tx, state, mempoolDuplicate, undo, 1000000);
UpdateCoins(tx, state, mempoolDuplicate, 1000000);
}
}
unsigned int stepsSinceLastRemove = 0;
@ -601,8 +601,7 @@ void CTxMemPool::check(const CCoinsViewCache *pcoins) const
assert(stepsSinceLastRemove < waitingOnDependants.size());
} else {
assert(CheckInputs(entry->GetTx(), state, mempoolDuplicate, false, 0, false, NULL));
CTxUndo undo;
UpdateCoins(entry->GetTx(), state, mempoolDuplicate, undo, 1000000);
UpdateCoins(entry->GetTx(), state, mempoolDuplicate, 1000000);
stepsSinceLastRemove = 0;
}
}

14
src/undo.h
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@ -68,4 +68,18 @@ public:
}
};
/** Undo information for a CBlock */
class CBlockUndo
{
public:
std::vector<CTxUndo> vtxundo; // for all but the coinbase
ADD_SERIALIZE_METHODS;
template <typename Stream, typename Operation>
inline void SerializationOp(Stream& s, Operation ser_action, int nType, int nVersion) {
READWRITE(vtxundo);
}
};
#endif // BITCOIN_UNDO_H

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